package com.home.java;

public class DaoJiShi {
    public static void main(String[] args) {
        for(int i = 10; i >=0 ; i--) {

            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(i);
        }
        System.out.println("发射");

        }
    }

